This LumiLoupe Ultra is a wonderful addition to your stitching supplies. Now you can see your fabric and stitches up close with the 5X magnification. There are 6 ultra bright LED lights with 3 brightness levels. The magnifier lens is 2.5" across. The complete unit measures 5.5" long and 1.75" tall. There are finger grip strips on the side making it extremely easy to move around on your fabric or pattern. Uses 3 AAA batteries, which are not included.